Best Tankless Water Heaters Reviewed

Best Tankless Water Heaters Reviewed

Are you tired of high electricity bills and expensive replacement and maintenance costs for your water heater tank? You can join the bandwagon of homeowners who prefer efficiency and lest costly hot water systems. Buying a tankless water heater is one of the best investments for a homeowner. Owning the best tankless hot water heater has the potential of providing you with unlimited, consistent hot water. Tankless water heaters operate on 3 power sources: natural gas, propane and electricity. They come with a thermostat which shuts off or on the power source when the preset temperatures are reached. Electrically powered tankless water heaters are quick to offer on demand and continuous hot water for single point-of-use and multiple applications. In most electric tankless designs, water flows past heating coils to produce the on-demand hot water, which is different from tank water heaters. The availability of a variety of water heaters in the store could make it hard for you to pick the right unit for your home. In this review we be will go through a number of top rated tankless water heaters. Using the reliable tankless water heater reviews, we will try and help you make the best choice.

Tankless Water Heaters Reviews

The tankless water heaters ratings on the units that we have picked show to what extent the unit is efficient and less costly. In the end you should be able to figure out the best product for your specific need. In this review, we will go through 9 tankless water heaters.

1. Stiebel Eltron 224199 Tempra 24 Plus

Stiebel Eltron 224199 Tempra 24 Plus

Design Features

Stiebel Eltron tankless water heaters are made in Germany. They are available in two versions the Tempra and the Tempra plus, each specified in terms of kW (12-36). They are about the size of a briefcase. These tankless water heaters come with a Digital temperature control. They have a voltage capacity of 240 or 208 Volt. This device doesn’t require venting during operation. Other features include a simple single flow sensor design, upgraded heavy-duty electronics and a hinged cover for easy access. The Stiebel Eltron 224199 Tempra 24 Plus tankless water heater has a voltage, frequency and wattage requirement of 240V, 1 Phase, 50/60 Hz and 24 kW respectively. It also has a maximum amperage of 100 A and an output water temperature range of 86 0F to 140 0F.

The Stiebel Eltron 224199 Tempra 24 Plus uses intelligent self-modulating technology to ensure that the least amount of energy is used in making the water hot. It is well designed for low, medium and high demand hot water supply, so it can be used for the whole house.

This tankless water heater uses an Advanced flow technology. This technology works by automatically adjusting the flow of water to eliminate unpleasant temperature fluctuation. Hence, it keeps the water temperature constant all the time.

Pros

· Silent in during operation
· It does not require venting
· Small and compact in size, saves space
· No standby energy losses
· 99% energy efficiency with constant energy savings
· Provides continuous hot water
· Easy to install and use
· Friendly customer service and tech support
· Looks stylish when mounted on the wall

Cons

· Requires water test for pH and chemical composition
· Costly maintenance and installation when professionals are consulted
· Reduces the water flow when water is running in other locations

User Critic

According to customer reviews, the unit is cheaper only if you manage install it on your own. Seeking assistance from certified and licensed electricians and plumbers may incur you a cost similar to the price of the heater or even more. Judging from most buyers, it appears that the heater only serves them for not more than 3 years, but if you are lucky it can go up to 5 years.

Final Verdict

Compared to many similar gas tankless models the Tempra is less expensive to purchase. The tankless water heater is recommendable for single living in houses or condos with two bathrooms.
The reliability of the product has been proven: One can save at least 15-20% of your electric bill on hot water usage. The device comes with a leakage warranty of 7 years and parts warranty of 3 years.

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2. Rinnai RUC98iN Ultra Series

Rinnai RUC98iN Ultra Series

Design Features

The Tankless Water Heater is designed for indoor installation only. There are two options of venting this unit: concentric or twin pipe PVC venting. The unit has a uniform energy factor of 0.92 which can go up to 0.96. The Rinnai RUC98iN Ultra Series tankless water heater has a minimum and maximum heating capacity of 15,200 and 199,000 BTUs respectively. The parent company claims that this unit can heat 9.8 gallons per minute with a voltage capacity of 120 volts. Most Rinnai tankless water heaters burn natural gas or propane to produce heat energy. This unit uses a condensing technology to deliver more efficiency. The commercial temperature range of Rinnai heater is set at 98° F to 185° F, while the residential ranges from 98° F to 140° F.

Pros

· No standby energy losses
· It is relatively easy to install with plumbing and electrical knowledge
· Works flawlessly
· uses less gas and saving money on utility bills
· It is small in size, but runs quietly
· Designed with an accurate temp control mechanism
· Comes with an informative manual
· Provides constant, endless hot water
· Customer support team is extremely nice and helpful
· produces Ultra-low NOx emissions
· It has a 95% Thermal Efficiency
· Energy Star certified

Cons

· Its waste lots of water as you wait for the water to heat up
· very slight dip in water pressure
· costly installation cost

User Critic

The output water flow depends on the input water temperature. This is to say that you should get a flow rate of 9.8 gpm when the input water temperature is at 55 degree. There is also limited information on maintenance, such as, how to flush the heater.

Final Verdict

The Rinnai RUC98iN Ultra Series tankless water heater is ideal for residential and commercial application; it can also be used for space heating purpose. Since its electronic ignition meets Texas and California NOx emissions standards, the unit is fit to be used in these states. The company gives a 12-year warranty on the heat exchanger, 5-year warranty for components and parts and lastly a year warranty for reasonable labor if the unit is to be used for residential homes. Using these tankless water heaters for commercial purpose gets you a 5-year warranty for both the heat exchanger and components or parts and a year-warranty for reasonable labor.

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3. Takagi T-KJr2-IN-NG

3. Takagi T-KJr2-IN-NG

Design features

The Takagi T-KJr2-IN-NG is the smallest unit in the Takagi line-up of tankless water heaters. It is designed for indoor installation. The unit uses natural gas as a source of power with an energy factor that ranges from 0.81 to 0.83. The unit has a minimum and maximum heating capacity of 19,500 BTU/hr and 140,000 BTU/hr respectively. The maximum flow rate of the unit is designed for 6.6 GPM. The unit has been fitted with inlet and outlet thermistors for constant temperature monitoring. During installation, it requires a 4-Inch category III stainless steel venting. Furthermore, it can be converted into a direct-vent unit. It contains a power vent and it automatically adjusts the gas consumption for the demand. The power vent makes extended horizontal venting possible.

Pros

· The unit is environmentally friendly and Cost-efficient
· no standby energy losses
· It is well designed and compact in size
· Efficient and quiet in operation
· The unit comparatively cheap
· Provides endless hot water
· Energy Star certified water heater
· Easy to install
· A high-quality product.
· Offer great tech support

Cons

· Restricted to electric power
· Takes time for water to get hot
· cost of installing it too high
· you need to buy additional materials

User Critic

Judging by the tankless water heater reviews, it takes more than twice as long to deliver hot water, and wastes more than twice as much water in the process. Warranties are only valid if unit was installed by a properly licensed technician

Final Verdict

The Takagi T-KJr2-IN-NG tankless water heater is terrific addition for new construction. This tankless water heater is effective when in use in a house with a small kitchen and bath or larger house if all faucets are used once at a time. Perfect for small residential house units and radiant heating applications; it can be used for commercial purposes. The unit is backed up by a warranty of 10 years for the heat exchanger and 5 years for parts.

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4. Rheem RTEX-13

Rheem RTEX-13

Design Features

The electric Rheem RTEX-13 tankless water heater is designed for indoors installation. The 99.8% energy efficient rating placed on this unit makes it the list of top rated tankless water heaters. This tankless water heater uses a corded-electric power source to run it. It requires a voltage capacity of 240 volts and an amperage rating of 13 KW. The temperature control allows one to make increments of 1°F ranging from 80°F to 140°F. At a flow rate of 1.5 GPM, this unit can heat the water for as low as 59°F. The Rheem RTEX-13 tankless water heater offers an external adjustable digital thermostatic control (adjusts temperature in increments of 1°F), an LED display and two durable copper immersed heating elements.

Pros

· Drops monthly electricity bills by 30%
· provides endless hot water
· no standby energy losses
· 99.8% energy efficient.
· It has a simple installation process
· small and compact in size: saves space
· Threaded for easy replacement
· Simple to operate.

Cons

· Can’t handle hard water hence the temperature of the water goes down
· Expensive to fix when it breaks down

User Critic

Judging from consumer reviews, the unit works best when it runs once at a time, you can either use it for shower, the dishwasher or the washing machine. It also appears that the parent company is so reluctant in honoring the warranty.

Final Verdict

The Rheem RTEX-13 tankless water heater is designed to offer quick, on demand, continuous hot water for single point-of-use or multiple applications. The unit is ideal for residential use and a perfect investment for new houses under construction or renovation or when upgrading from a previous version or different brand.

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5. Rinnai V65IN

Rinnai V65IN

Design Features

The Rinnai V65IN tankless water heater is designed for indoor installation. It has a maximum heating capacity and energy factor (for Natural Gas and Propane) of 150,000 BTU’s and 0.82 respectively. This tankless water heater has a power consumption that range from 76 to 120 watts; this requires a voltage capacity of 120 Volts with a frequency of 60 Hz. The unit has temperature controls which range from 98°F – 140°F. You will also discover that it is designed with a temperature lock mechanism that helps prevent accidental or unauthorized changes to water temperature. It also features an Integrated Error Code Indicator. Safety It also has Homes Leak feature that detects leakage and shuts off water supply to the unit in a bid to avoid property damage. In addition, the heater has an Enhanced scale detection feature to lessen the possibility of serious, long-term damages to the unit.

Pros

· It has no standby energy losses
· Small, lightweight and compact unit
· ENERGY STAR qualified
· Unlimited hot water supply
· Installs easily with the recommended vent kit
· Saves space

Cons

· Costly installation
Doesn’t come with a vent kit
· Increased water usage and bills

User Critic

The heater is cheaper when installed by the owner. In addition, the operation of the heater may lag and sometimes sound a bit noisy. The 6.6 GPM rating is achievable only on a small temperature rise.

Final Verdict

The Rinnai V65IN tankless water heater is suitable for use in a family house of three members. It is approved for installation and use in mobile homes. The tankless water heater backed by a 10-Year Warranty on Heat Exchanger, 5-year on Parts, 1-Year on labor. The unit has passed ENERGY STAR ‘s qualifications and also meets the California and Texas NOx emissions standards.

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6. Sio Green IR30 POU

Sio Green IR30 POU

Design Features

This unit stands out from other tankless water heater brands because it is perceived to be a new generation of electric tankless water heaters. The parent company is the first to apply for a U.S patent for the coating on the outside section of the Quartz tubes which helps to reflect or contain the Far-Infrared Energy.mThe Sio Green IR30 POU uses infrared technology to heat up the water. Far-Infrared Energy produced is used to warm up the cold water passing through the heating chambers. The company unit avoids the use metallic elements in its coils structures too prevent corrosion and mineral and deposits buildup. The medium used for the heating tubes is Quartz. The water heater unit uses electricity as the sole power source. It has a power consumption of 3.4kW which demands for a voltage and amperage range of 110v to 120v and 8A to 30A respectively. The Sio Green IR30 POU tankless hot water heater operates in manual mode. It also features 4 power levels (1-4), which can be used to adjust the current and power to fit any application. It comes with a Water Flow Regulator to help you easily adjust the temperature of the heater. It is fitted with an outlet thermocouple which constantly monitors the temperature of the water and displays it on the LCD screen. It’s shoebox-like design saves space and can fit in smaller cabinets for easy installation.

Pros

· It has no standby energy losses
· The unit cost-effective when in operation
· Corrosion Free, No Lime Scale, No Algae, No Bacteria contamination
· save time, money
· Quick & Easy Installation
· Saves energy
· Saves space
· Constant supply of hot water

Cons

· Costly installation
· Rated for only one use at a time

User Critic

According to the tankless water heater reviews, one can’t claim the warranty unless he or she consults from a licensed installer. Furthermore, it won’t be efficient to you if you opt to use the unit to whole house supply, designed for one use at a time.

Final Verdict

This tankless water heater is ideal for small rental house application. The size of the heater allows you to install it anywhere inside your home. This tankless hot water heater works best when it is used to provide hot water from either the sink or bath outlets.

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7. Takagi T-KJr2-OS-NG

Takagi T-KJr2-OS-NG

Design Features

The Takagi T-KJr2-OS-NG is the smallest unit in the Takagi line-up tankless water heaters. The water heater was designed for outside installation only. The unit features an internal freeze protection. The heater can be converted into a direct-vent unit. It comes with a wired remote-control panel to help in altering its base temperature or monitoring the gallons per minute. The Takagi T-KJr2-OS-NG tankless water heater has an energy factor of 0.82 and it has a heat capacity that ranges from 19,500 to 140,000 BTU/hr. The unit has a max flow rate 6.6 GPM. It uses electricity and natural gas to ignite the burners.

Pros

· No standby energy losses
· Easy to install.
· Constant supply of hot water
· Works as expected: supplies limitless hot water
· Cost-efficient and environmentally friendly
· It is a Energy Star rated unit
· Slightly reduces monthly electric and gas bills
· Compact in size and relatively light in weight
· Quiet in operation
· Saves on the exhaust pipe

Cons

· Restricts water flow from the outlets
· Waiting time may range from 30 seconds to 1 minute
· Costly installation (if you choose to consult professional plumbing and electrical services)
· It requires electricity to ignite the burners

User Critic

Judging by the tankless water reviews, the manufacturing company of this unit has placed a restriction as to when it should be installed: to be installed in a “temperate” climate. Running more than one water outlets won’t heat up the water to the expected temperatures. It is so unfortunate that the water heater has to be installed by licensed personnel for the warranty to stand.

Final Verdict

This is a good investment for a rental house with 2 baths and a kitchen. Recommendable to someone with a small family of less than 4 people. The Manufacturer offers a 12-year warranty on the heat exchanger, 5-year warranty on parts and lastly a 1-year warranty on labor.

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8. Rinnai V65EP

Rinnai V65EP

Design Features

The Rinnai V65EP tankless water heater is powered by Propane with an energy factor of 0.82. The unit is designed for outdoor installation. The heater uses a Low Nox burner to heat up the water. This is one of the tankless water heater brands that focuses on producing units with “low” emissions of Nitric Oxide/ Nitrogen Dioxide.

It is powered by a voltage of capacity of 120 volts. The company claims that it can claimed that it can deliver up to 6.6 (GPM) of hot water. The unit has a maximum heating capacity of 150,000 BTU. It is designed with an enhanced scale detection and a temperature lock mechanism to help lessens the possibility of damage to the unit and accidental changes of water temperature respectively. This water heater comes with a remote digital control unit which allows one to turn on or off the heater and also adjust the water temperature.

The remote control must be connected and placed inside your house. By installer, the temperature ranges from 98°F to 140°F, but the Pre-set temperature of the unit is always at 120°F. The water heater appears to have been fitted with an Integrated Error Code Indicator.

Pros

· It is easy to install
· Provides endless hot water supply
· It is a sizeable and ultra-compact unit
· It saves space when compared to a tank water heater
· No standby energy losses
· relatively efficient and works perfect

Cons

· Costly installation when professional help is needed
· Wastes water waiting heat up

User Critic

For this unit to work properly you need an expert to help you install it in your house, but if you have basic plumbing and electrical wiring knowledge the better and cheaper. However, there is an additional cost for those who seek professional assistance to install this unit One violates the warranty conditions if he or she makes faulty installations that leads to malfunctioning of the water heater. Therefore, you need to read all the directions and get all the required materials prior to installation. It takes 15 to 30 seconds before the water gets hot.

Final Verdict

The Rinnai V65EP Tankless Water Heater is easy to install and works well as it was designed. It is a worthwhile investment for a one or two bathrooms. in case of a power outage, you still operate the unit with a small generator of 110 to ignite your gas unit. The unit has a 10-year Warranty on Heat Exchanger, 5 Year on Parts, 1 Year on Labor.
The tankless water heater is certified for Installation in Manufactured (Mobile) Homes and made compatible with 1/2inch Gas Lines and Full Line of Rinnai Digital Controllers Furthermore, the water heater complies with South Coast Air Quality Management standards for NOx emission.

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9. Marey ECO150

Marey ECO150

Design Features

The Marey ECO150 tankless water heater comes with smart technology. This unit has an LCD panel, which allows the user to make simple adjustments for easy management. This smart technology, lets you optimize the heater’s energy consumption. The unit can heat water at flow rate of 2.5 GPM. The heater is small in size and white in color. It has an energy consumption of 14.6kW and operates on a frequency of 60 Hz with a voltage capacity that ranges from 220V to240V. The tankless water heater is designed with a flow switch activation mechanism to maintain constant temperatures even when the flow rate is as little as 5Gpm/5Psi. This German designed water heater uses high quality components to prevent corrosion and reduces hard water buildup, hence increasing the incoming water temperature of 41°F at a 2.5GPM water flow rate. The temperature ranges from 41 degrees to up to 124 degrees. This unit appears as one of the top-rated tankless water heaters due to the fact that it is the only brand in the market that is German designed and includes a patented heating element.

Pros

· ETL approved
· Saves energy
· Saves space
· No stand-by energy losses
· endless hot water
· It is easy to install

Cons

· Expensive to install

User Critic

When the hand sink and shower outlets are running at the same time, the former gets a flowrate of 1 gpm while the later gets a flow rate of 1.5 gpm. Therefore, the temperatures of the water vary depending on the water flow rate. It requires a licensed electrician and plumber for the warranty to stand.

Final Verdict

The Marey eco series tankless water heaters are the only ones in the market to include a German-designed, patented heating element with a stainless-steel water channel. The MAREY ECO150 tankless water heater is ideal for up to two simultaneous points of use. It comes with a 5-year warranty.

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Generally, the list of tankless water heater reviews suggest that these tankless water heater brands are designed to serve various household needs. And going by the tankless water heaters ratings of the units discussed in this review, it should be easy for you to pick one if you happen to know:

· The chemical properties of your water,
· The climate around you,
· Your demand of hot water (low, medium or high),
· The sum flow rate of the maximum number of devices you want to run
· The temperature rises you wish to achieve.

Your success in finding the best tankless hot water heater does not only depend on your budget.

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Best Tankless Water Heaters
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Best Tankless Water Heaters
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Best Tankless Water Heaters
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